diff options
| -rw-r--r-- | package/madwifi/patches/315-power_drop_PR1695.patch | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/package/madwifi/patches/315-power_drop_PR1695.patch b/package/madwifi/patches/315-power_drop_PR1695.patch new file mode 100644 index 0000000000..6b512b5645 --- /dev/null +++ b/package/madwifi/patches/315-power_drop_PR1695.patch @@ -0,0 +1,39 @@ +The attached patch fixes the problem of very weak packets being send out +after periodic calibration + +Signed-off-by: Karol Kowalik <karol.kowalik@cnri.dit.ie> +Index: madwifi-dfs-r3252/ath/if_ath.c +=================================================================== +--- madwifi-dfs-r3252.orig/ath/if_ath.c 2008-01-26 03:56:26.461576124 +0100 ++++ madwifi-dfs-r3252/ath/if_ath.c 2008-01-26 03:58:50.628969172 +0100 +@@ -8875,6 +8875,9 @@ + struct ieee80211com *ic = &sc->sc_ic; + /* u_int32_t nchans; */ + HAL_BOOL isIQdone = AH_FALSE; ++ u_int8_t papd_probe_power; ++ u_int8_t papd_probe_power_max = 63; ++ u_int16_t crnt_power_hdBm = sc->sc_curtxpow; + + sc->sc_stats.ast_per_cal++; + DPRINTF(sc, ATH_DEBUG_CALIBRATE, +@@ -8912,6 +8915,20 @@ + sc->sc_stats.ast_per_calfail++; + } + ++ /* ++ * After calibration is done we need to update AR5K_PHY_PAPD_PROBE ++ * register with the probe_tx_power equal to current tx_power ++ * otherwise a power drop may be observed ++ */ ++ crnt_power_hdBm = crnt_power_hdBm <= ic->ic_txpowlimit ? crnt_power_hdBm : ic->ic_txpowlimit; ++ papd_probe_power = papd_probe_power_max - (ic->ic_txpowlimit - crnt_power_hdBm); ++#define AR5K_PHY_PAPD_PROBE_TX_NEXT 0x00008000 ++#define AR5K_PHY_PAPD_PROBE 0x9930 ++ OS_REG_WRITE(ah, AR5K_PHY_PAPD_PROBE, ++ AR5K_PHY_PAPD_PROBE_TX_NEXT | (papd_probe_power << 9)); ++#undef AR5K_PHY_PAPD_PROBE_TX_NEXT ++#undef AR5K_PHY_PAPD_PROBE ++ + ath_hal_process_noisefloor(ah); + if (isIQdone == AH_TRUE) { + /* Unless user has overridden calibration interval, |